Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.kernel > #91278

Bug#1127678: linux-image-6.12.69+deb13-amd64: Kernel module rtw_usb fails to detect usb wifi dongle with RTL8811AU chipset

Cross-posted to 2 groups.

Show all headers | View raw

[Multipart message — attachments visible in raw view] - view raw

Control: tag -1 + moreinfo

Hello,

On Wed, Feb 11, 2026 at 03:18:21PM +0100, pelzi@flying-snail.de wrote:
> Package: linux-image-6.12.69+deb13-amd64
> Version: 6.12.69-1
> Severity: important
> X-Debbugs-Cc: debian-amd64@lists.debian.org
> User: debian-amd64@lists.debian.org
> Usertags: amd64
> 
> Dear Maintainer,
> 
> after inclusion in mainline kernel, the module rtw_usb with its dependent 
> modules,
> detected and initialized the USB wifi dongle with the followinig IDs:
> idVendor=0bda, idProduct=a811, bcdDevice= 2.00
> 
> This did work fine with the kernels installed from Debian stable linux-image up
> to version 6.12.48-1.
> 
> After upgrading to version 6.12.63-1, this module fails to identify the 
> device,
> and upgrading again to version 6.12.69-1 does not cure the problem.
> 
> The outcome of adding this wifi dongle with 6.12.63-1 or 6.12.69-1 are the 
> following
> entries in dmesg:
>  usb 1-7: USB disconnect, device number 6
>  usb 1-7: new high-speed USB device number 8 using xhci_hcd
>  usb 1-7: New USB device found, idVendor=0bda, idProduct=a811, bcdDevice= 2.00
>  usb 1-7: New USB device strings: Mfr=1, Product=2, SerialNumber=3
>  usb 1-7: Product: 802.11ac WLAN Adapter 
>  usb 1-7: Manufacturer: Realtek 
>  usb 1-7: SerialNumber: 00e04c000001
> 
> No additional entries are generated in dmesg.
> 
> The expected outcome are additional entries in dmesg like
>  usbcore: registered new interface driver rtw_8821au
>  usbcore: registered new interface driver rt2800usb

Can you please provide a full kernel log for both the working and the
broken kernel?

Does the broken kernel emit anything to the kernel log when you plug in
the dongle in the completely booted system?

Best regards
Uwe

Back to linux.debian.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

Bug#1127678: linux-image-6.12.69+deb13-amd64: Kernel module rtw_usb fails to detect usb wifi dongle with RTL8811AU chipset Uwe Kleine-König <ukleinek@debian.org> - 2026-02-18 17:30 +0100
  Bug#1127678: linux-image-6.12.69+deb13-amd64: Kernel module rtw_usb fails to detect usb wifi dongle with RTL8811AU chipset pelzi@flying-snail.de - 2026-05-04 00:10 +0200

csiph-web